MPC8349E-mITX-GP Reference Design Platform User’s Guide, Rev. 0
18
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
MPC8349E-mITX-GP Board
1.5
Jumpers, Switches, and LED Indicators
This section shows the default settings and descriptions of jumpers, switches, and LED indicators.
1.5.1
Powerup Configuration Jumpers
The powerup configuration jumpers at J22 sets up the system configurations.
Figure 16
shows the factory
default configuration of J22.
Figure 16. Powerup Configuration Jumpers (J22)
Table 8
describes the position of each jumper.
Table 8. Description of Jumper J22 Positions
Position
Name
Default
ON = Jumper Is On
OFF = Jumper Is Off
Description
A
LGPL0
ON (0)
000 local bus EEPROM (Default)
001 I
2
C EEPROM,PCI_CLK/PCI_SYNC_IN 25–44 MHz
010 I
2
C EEPROM,PCI_CLK/PCI_SYNC_IN 25–66.666 MHz
011 Hard-coded option, 66 MHz, 266 MHz, 400 MHz (PCI, CSB, CPU)
100 Hard-coded option, 33 MHz, 266 MHz, 400 MHz
101 Hard-coded option, 33 MHz, 133 MHz, 266 MHz
110 Hard-coded option, 33 MHz, 166 MHz, 333 MHz
111 Hard-coded option, 66 MHz, 266 MHz, 533 MHz
Hard-coded option is used in conjunction with JTAG debug
B
LGPL1
ON (0)
C
LGPL3
ON (0)
D
LGPL5
OFF (1)
OFF (1): Default
CLKIN: PCI_SYNC_OUT = 2:1 PCI_CLK_OUT[0:7] = OCCR (max CLKIN/2).
66 MHz CLKIN is used and 33 MHz PCI2.
ON (0):
CLKIN: PCI_SYNC_OUT = 1:1, PCI_CLK_OUT[0:7] = CLKIN. 66 MHz
CLKIN is used, 66 MHz PCI2.
E
BOOT1
OFF(1)
OFF (1): Default
MPC8349E fetches the reset vector from Flash 0 (U4).
ON (0): Reserved
A
B
C
D
E
F
G
H
Jumper Off
Jumper On